Pharmaceutical compound



Patented Sent. 29, 1925.

UNITED STATES PATENT OFFICE.

HANS HAHII, OF ELBERFELD, GERMANY, ASSIGNOB TO -IABBENFABBIKEN VORM.

FBIEDR. BAYER AND (10., OF LEVEBKUSEN, NEAR COLOGNE-ON-THERHINE, GER- MANY.

PHARMACEUTICAL COMPOUND.

No Drawing.

T all whom it may concern Be it known that I, HANS HAHL, a citizen of Germany, residing at Elberfeld, in the State of Prussia, Germany, have invented new and useful Improvements in a New Pharmaceutical Compound, of which the 'following is a specification.

The present invention concerns the production of the hitherto unknown alkaline 1 earth metal salts of complex antimony compounds which are derived from mercapto carboxylic acids e. g. the antimony calcium salt of thiogl collie acid having most probably the form la: a

They are slightly yellowish to whitish powders of a weakly alkaline reaction soluble in water and are valuable spirillocides. I In order to illustrate the new process more zurfully the following example is given parts by weight of thioglycollic acid and 6 parts by weight of antimony oxide (Sb O are heated together with 60 parts by weight of water until the greater part 80 of the antimony oxide is dissolved. The liquid .is filtered and the filtrate is almost completely neutralized with calcium carbonate. The mixture is poured into alcohol. The new product is thus precipitated in the 85 form of a white powder containing about per cent of antimony.

The other alkaline earth metal salts are prepared in an analogous manner.

Application filed December 10, 1924. Serial No. 755,059.

Other mercapto carboxylic acids e. the ortho-mercaptobenzoic acid (thiosahcylic acid) may be used.

I claim 1. The process of producing alkalinev earth metal salts of complex antimony compounds of mercapto carboxylic acids, which process consists in treating the mercapto carooxylic acid with an oxy derivative of the trivalent antimony and neutralizing the resulting product with a suitable alkaline earth metal compound, substantially as described.

2. The herein described alkaline earth metal salts of complex antimony compounds of mercapto carboxylic acids, being whitish powders soluble in water with a weakly alkalinereaction and being valuable spirillocides, substantially as described.

3. The herein described-calcium salt ofthe complex antimony compound of the thioglycollic acid having most probably the following formula:

s-om-ooo Ca my hand.

HANS HAT-IL. 

